Fountain ruling-pen



A. GRAN.

rourmm nuuNe PEN.

I A 4 APPLICATION FILED DEC. 20,1919. l 1,355,961. Pawnted Oct. 19, i920.

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ALBERT GRAN, GF CHICAGO, ILLINOIS, ASSIGNOR TO DESIGNERS INSTRUMENT `COIVIPANY, OF CIIICAGO, ILLINOISQA. CORPORATION 0F ILLINOIS.

FOUNTAIN RULING-PEN.

specification of Letters Patent Patented Oct. 19, 1920.

Application tiled December 20, 1919. Serial No. 346,232.

'o ail whom t may concer/a:

'Be it known that l, ALBERT GRAN, a citizen of the United States, residing at Chicago, in the county of Cook and State of llinois,'have invented new and useful .lmproveinents in Fountain Ruling-Pens, of which the following is a specification.

rlliisinvention relates to improvements in pens and refers more particularly to fountain ruling pens.

The princi-pal object of the invention is to provide a simple andeifective ruling pen of the foregoingtype having a reservoir for ink and means for delivering ink from the reservoir to the pen blades when desired.

A further object is to provide such a pen with means for regulating the amount of ink to be applied to the pen blades from the reservoir, together with a safety device whereby the feed of ink may be entirely cut off when the pen is not in use.

lll/'ith the foregoing and other objects in view, the invention comprises the new and useful details of construction and arrangement, which will be fully described herein, illustrated in the annexed drawings and claimed more specifically hereinafter.

In the drawings, i

Figure 1 is a side elevation of a fountain ruling pen embodying the improvements of this invention, and Fig. 2 is a longitudinal sectional view of the improved ruling pen.

Referring now to the drawings, 'it will be seen that the improved ruling pen comprises a hollow handle or barrel 1, which forms an elongated reservoir 2 for the reception of a supply of ink, the ends-of the barrel being internally threaded to receive a pen socket 3 at the lower end and a top 4 lat the other endlV Into the outer end of pen socket 3 is screwed the base of the pen blades 41 which are preferably of the integral type having a threaded cylindrical base 5. The blades are adjustable for width of line b v an adjusting screw stem 7 and nut 9 in the usual manner.

Pen socket 3 and base 5 of the pen blades are bored out longitudinally to receive a fixed feed tube 6, which tube is restricted in diameter at itslower end where it passes through an enlargement 8 of the screw stem 7 between the blades of the pen, the part 8 being perforated longitudinally of the pen to receive the feed tube. Within feed tube 6, and slidable therein, is a pointed needle valve l0I which is grooved longitudinally as at 10a fora purpose to be presently eX- plained.

rlhe upper end of needle valve 10 is enlarged to form a plunger head 11 and the inner end of pen base socket 3 is elongated and centrally bored to forni a plunger'chamber 12 in which the plunger head is adapted` to move longitudinally, the chamber being radially perforated at 12a to provide an inlet port for ink from the reservoir 2. Plunger head 11 has a collar 13 formed on its outer end and a coil spring 14 has one end seated against the collar 13 and the other end seated against a washer'l abutting against the inner end of pen socket 8, the spring being carried about the plunger head in position to normally retract the plunger and close the needle valve.

'.lhe top 4 is centrally bored to receive an axial plunger rod 16, the inner face of the top being counter bored to form a packing chamber 17 and internally threadedto receive a suitable centrally perforated packing nut 18. Rod 16 is threaded below the inner face of packing nut 18 and a nut oi' sleeve 19 is carried thereon to provide an adjustable seat or abutment for oneend of the coil spring20 on rod 16, the other end of said spring seating against the packing nut, the spring thus being positioned to normally urge plunger rod V16 downward into contact with the upper end of plungei' head 11. The upper end of plunger rod 16 is provided with a fixed recess cap 21, the cap being positioned to slide longitudinally and also rotate on the top. with the pluiiger rod. i

The operationl of filling reservoir2 may beeffected by unscrewing top 4 from barrel 1 and withdrawing the top and plunger rod therewith, whereupon ink may be introduced to the reservoir in any suitable manner, as -by an ink dropper. The top and accompanying parts may then be screwed into place, an air vent groove 22 allowing the displaced lair within the reservoir to escape.

The filling of the pen blades is accomplished by the aeturition of cap 21 and plunger rod 16 downward, whereupon the plunger head 11 ywill also be forced downward against the normal action of coil spring 14, the ink within chamber 12 being forced downward intol tube 6 about needle valve 10. When the needle valve has traveled downward sufficiently, the grooved portion 10a thereof will reach the end of the feed tube, thereby providing an outlet port through which the ink may flow downward about the pointed end of the needle valve and allowed to collect between the blades of the pen in the usual manner.

The amount of ink to be deposited between the pen blades is regulated by a device for adjusting the length of stroke of plunger rod 16, plunger head 11 and needle valve 10. Cap 2l is provided with a plurality of longitudinal slots such as 23, 24 and 25, and the top 4 is provided with a projecting spline 26 in position to engage such slots selectively. When it is desired to deposit a relatively large amount of ink between the pen blades with each stroke of the feed mechanism, the cap may be slightly withdrawn from the top against the normal action of spring 20 and then rotated on top 4 so that the spline 26 will engage in slot 23. The pen is then set for delivering the relatively large quantity of ink at each stroke, since the plunger head aiid needle valve will travel downward substantially the full stroke. When spline 26 is engaged in slot 24, a shorter stroke will be attained by reason of the relatively shorter travel allowed by slot 24, the stroke being limited by the contact of spline 26 and the end of the slot. When spline 26 is engaged in slot 25 no downward stroke of the feed device will be possible, thus locking the feed device entirely,-this position is obviously desirable yto when the pen is out of use, thuspreventing accidental actuation in handling'.

i* rom the foregoing description 1t will be apparent that the present invention' providesy a simple and effective ruling pen having a reservoir for ink, and that improved means are applied thereto for feeding ink to the pen blades in desired quantities and for lockiiig the feed device when thel pen is vout of use.

AI claim: f

l. A ruling pen comprising ahollow handle forming an ink reservoir, a removablel closure for one end ofthe handle, pen blades carried by the other end of the handle, an ink feed tube extending from the reservoir and terminating between the pen blades, a

' longitudinally slidable plunger head in the feed tube positioned to force ink through the feed tube, a needle valve carried bythe plunger inposition to normally close the feed tube and having a groove therein positioned to open the feed tube upon advance o'i the plunger and needle valve, and a plunger rod in operative engagement with the plunger head.

2. A ruling pen'c'omprising a hollow handle forming an ink reservoir, a removable closure for one end of the handle, pen blades carried by the other end of the handle, an ink feed tube extending from the reservoir and terminating between the pen blades, a longitudinally slidable plunger head in the feed tube positioned to force ink through the feed tube, spring means carried bythe feed tube and the plunger in position to normally retract the plunger, a needle valve carried by the plunger in position to normally close the feed tube and having a groove therein positioned to open the feed tube upon advance of the plunger and needle valve, a plunger rod carried centrally of the handle and projecting through the aforesaid closure, and spring means carried bythe closure and -plunger rod in position to normally actiiate the plunger rod forward into Contact with Y the plunger head. v f

3. A ruling pen comprising a hollow handle forming an ink reservoir, aremovable closure for one end of the handle, pen blades carried by the other end of the handle, an ink feed tube extending from the reservoir and terminating between the pen blades, a longitudinally slidable plunger head in the feed tube positionedV to force ink through vthe feed tube, theV feed' tube being radially perforated adjacent to the normal position of the face of the plunger head to allow ink from Vthe reservoir to enter thefeed tube, ay needle `valve carried by' the plunger in position to normally close the Y ioc carried by the other end ofthe handle, an

. ink feed tube extending from the reservoir and terminating between the pen blades a longitudinally slidable plunger head in the feed tube positioned to force ink through the feed tube, a valve carried by the plunger Vfor controlling thediscliarge from the feed tube, and operating means for the plunger head. Y

ln testimony whereof I aHiX my signature.

ALBERT GRAN. 

